Amplify

What is the primary function of an amplifier in an electronic circuit?

• To increase the amplitude of a signal

• To decrease the amplitude of a signal

• To convert AC to DC

• To store electrical energy

Tags

NGSS.HS-PS3-3

Which component is commonly used in amplifiers to increase signal strength?

• Resistor

• Capacitor

• Transistor

• Inductor

In the context of sound, what does an amplifier do?

• Increases the frequency of sound waves

• Decreases the frequency of sound waves

• Increases the amplitude of sound waves

• Decreases the amplitude of sound waves

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

Which of the following is a type of amplifier used in audio systems?

• Operational amplifier

• Differential amplifier

• Power amplifier

• Voltage amplifier

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NGSS.HS-PS4-5

What is the unit of measurement for the gain of an amplifier?

• Hertz

• Decibel

• Watt

• Volt

In a basic amplifier circuit, what role does the feedback loop play?

• Increases distortion

• Reduces gain

• Stabilizes gain

• Increases noise

Which of the following is a common application of amplifiers in telecommunications?

• Signal modulation

• Signal amplification

• Signal demodulation

• Signal encryption

Tags

NGSS.HS-PS4-5

What is the term for the maximum output power an amplifier can deliver without distortion?

• Peak power

• RMS power

• Clipping power

• Saturation power

In a transistor amplifier, what is the purpose of the biasing circuit?

• To increase the input impedance

• To decrease the output impedance

• To set the operating point

• To amplify the noise

Which type of amplifier is used to drive speakers in a home audio system?

• Voltage amplifier

• Current amplifier

• Power amplifier

• Operational amplifier